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No, there is a possibility that the receiver cannot detect errors that are present in the packet.

This is because the receiver is computing the Internet checksum for the received UDP segments and comparing it with the checksum field.

• It may happen that the corresponding bits of two 16-bit words that are added together may be flipped to 1 and 0 respectively.

• Then the resultant sum will be the same.

• When the 1’s complement of sum is performed, the resultant will be the checksum.

• The receiving host uses the checksum to check whether there are errors in the segment.

• When this checksum is used to detect the errors in the packet, then the errors will go undetected.


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